PARKING BRAKE

Abstract

A parking brake according to an embodiment of the present disclosure comprises a disc arranged to rotate with a wheel of a vehicle, a carrier with a rotating shaft formed on one side, which is arranged to move back and forth by means of an actuator in the direction of an outer circumferential surface of the disc, and a friction lining coupled to the carrier to make the rotating shaft rotatable, and which is arranged to apply pressure or release pressure to at least a portion of the outer circumferential surface of the disc in response to the reciprocating movement of the carrier.

Description

BACKGROUND1. AREA

[0001] Embodiments of the present disclosure relate to a parking brake, and more particularly to a parking brake that provides braking force to prevent movement of a parked vehicle by pressing on a disc that rotates with a wheel of the vehicle in a radial direction. 2. DESCRIPTION OF THE STATE OF THE ART

[0002] Generally, parking brakes on vehicles can be divided into DIH (Drum In Hat) and PIC (Parking Integrated Caliper) types. In recent years, the PIC parking brake, which offers cost and weight advantages over the DIH parking brake, has become widely used in everything from small cars to medium and large vehicles, and this trend is expected to continue.

[0003] These PIC type parking brakes function in the same way as conventional floating caliper brakes during normal braking with the brake pedal, but are equipped with a mechanical structure within the brake caliper that can perform parking brake functions such as actuating the cable.

[0004] The problem with these conventional PIC parking brakes is that when the parking brake is applied, while the disc is thermally expanding after repeated braking with the main brake, the originally designed parking brake performance decreases because a gap develops between the disc and the friction material as the disc cools over time.

[0005] To solve this problem, a PIC type parking brake with a friction material with a relatively high friction coefficient was developed, but the parking brake with such a relatively high friction material has the limitation that it cannot be a fundamental solution because it causes another problem such as increased brake noise.

[0006] On the other hand, to solve this problem, a PIC parking brake has been developed, which can compensate for the gap between the disc and the friction material due to the thermal expansion of the disc, but it is difficult to compensate for the gap between the friction material and the disc considering various factors, including the thermal expansion of the disc and the wear of the friction material due to braking operation. DEMOLITION

[0007] Therefore, it is an aspect of the present disclosure to provide a parking brake that generates a braking force by pressing the outer peripheral surface of the disc in a radial direction separately from the main brake, in order to prevent the performance of the parking brake from deteriorating due to thermal expansion of the disc, etc.

[0008] It is a further aspect of the present disclosure to provide a parking brake in which a friction lining made of a relatively rigid material presses the outer peripheral surface of the disc in the radial direction to generate a braking force, thereby minimizing deterioration of braking performance due to wear or deformation of the friction lining by braking operation.

[0009] According to one aspect of the present disclosure, a parking brake may be provided including a disk configured to rotate with a wheel of a vehicle, a carrier having a rotary shaft formed on one side thereof and configured to reciprocate toward an outer peripheral surface of the disk by an actuator, and a friction pad coupled to the carrier to be rotatable about the rotary shaft and configured to apply or depressurize at least a portion of the outer peripheral surface of the disk in response to the reciprocating movement of the carrier.

[0010] The friction lining may comprise a lining plate having a joint rotatably engaged with the rotating shaft and a friction surface disposed between the lining plate and the outer peripheral surface of the disc.

[0011] The friction surface can be arranged in an arc shape and have a curvature that corresponds to the curvature of the disc.

[0012] The rotating shaft can be arranged parallel to a rotating shaft of the disc.

[0013] The parking brake may further include an elastic member between the carrier and the friction pad configured to generate an elastic force that allows the friction pad to be rotated about the rotating shaft.

[0014] The elastic element may be connected to the carrier at one end and to the friction lining at the other end to rotate the friction lining at a certain angle about the rotating shaft when the carrier is spaced from the disc.

[0015] The angle of rotation of the friction lining, which rotates around the rotating shaft by means of the elastic element, can be limited by a blocking element arranged on the carrier and a contact part arranged on the friction lining.

[0016] The friction lining may further include a rounded portion disposed at one end where the carrier is moved toward the outer peripheral surface of the disc and makes first contact with the outer peripheral surface of the disc.

[0017] According to another aspect of the present disclosure, there may be provided a parking brake comprising a disk configured to rotate with a wheel of a vehicle, a pair of carriers each having a rotary shaft disposed on one side and located on both sides of an outer peripheral surface of the disk relative to a rotation axis of the disk, configured to be moved back and forth toward the outer peripheral surface of the disk by an actuator, and a pair of friction pads each coupled to the carrier so as to be rotatable about the rotary shaft and configured to apply or release pressure to at least a portion of the outer peripheral surface of the disk in response to the reciprocating movement of the carrier.

[0018] The friction lining may comprise a lining plate having a joint rotatably engaged with the rotating shaft and a friction surface disposed between the lining plate and the outer peripheral surface of the disc.

[0019] The friction surface can be arranged in an arc shape and have a curvature that corresponds to the curvature of the disc.

[0020] The rotating shaft can be arranged parallel to a rotating shaft of the disc.

[0021] The supports may be arranged such that they are spaced apart from each other by the actuator relative to a rotational axis of the disc.

[0022] The drivers can be arranged so that they are moved forward and backward independently of each other by the actuator towards the outer peripheral surface of the disc.

[0023] According to another aspect of the present disclosure, a parking brake may be provided that includes a disc configured to rotate with a wheel of a vehicle, a carrier having a rotary shaft disposed on each side of the carrier and configured to be moved back and forth toward an outer peripheral surface of the disc by an actuator, and a pair of friction pads each coupled to both sides of the carrier to be rotatable about each rotary shaft and configured to apply or release pressure to at least a portion of the outer peripheral surface of the disc in response to the reciprocating movement of the carrier.

[0024] A center point between the rotating shafts may be arranged on a straight line corresponding to the center point of a rotation axis of the disc.

[0025] The friction lining may comprise a lining plate having a joint rotatably engaged with the rotating shaft and a friction surface disposed between the lining plate and the outer peripheral surface of the disc.

[0026] The friction surface can be arranged in an arc shape and have a curvature that corresponds to the curvature of the disc.

[0027] The rotating shaft can be arranged parallel to a rotating shaft of the disc.

[0028] The friction lining may further include a rounded portion disposed at one end where the carrier is moved toward the outer peripheral surface of the disc and makes first contact with the outer peripheral surface of the disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] These and / or other aspects of the disclosure will become clear and better understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Fig. 1 is a side view showing an engaged and disengaged state of a parking brake according to an embodiment of the present disclosure; Fig. 2 is a side view showing a released state of a parking brake according to an embodiment of the present disclosure; Fig. 3 is a side view showing the engaged state of a parking brake according to an embodiment of the present disclosure; Fig. 4 is a side view showing the released state of a parking brake according to another embodiment of the present disclosure; Fig. 5 is a side view showing the applied state of the parking brake according to Fig. 4 shows; Fig. 6 is a side view showing the released state of a parking brake according to another embodiment of the present disclosure; and Fig. 7 is a side view showing the applied state of the parking brake according to Fig. 6 shows. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the ideas of the present invention to those skilled in the art. The invention is not limited to the embodiments shown here and may be embodied in other forms. In order to clarify the invention, drawings that are not relevant to the description may be omitted from the drawings, and the sizes of the components may be slightly exaggerated for clarity.

[0031] Fig. 1 is a side view showing an engaged and disengaged state of a parking brake according to an embodiment of the present disclosure.

[0032] As in Fig. 1, a parking brake according to an embodiment of the present disclosure includes an actuator 100, a carrier 200, and a friction lining 300.

[0033] The actuator 100 serves as a means for advancing and retracting the carrier 200 toward the disc D, which rotates with the wheel of a vehicle. Either an electromechanical method using an electric motor or a hydraulic method using fluid pressure can be used. The actuator may comprise, for example, an electric motor or a hydraulic piston.

[0034] More specifically, if the actuator 100 is arranged electromechanically, the actuator 100 may further comprise an electric motor and a power transmission means, such as gears, for converting the rotary motion output by the actuator 100 into a reciprocating motion of the carrier 200. If the actuator 100 is arranged hydraulically, the carrier 200 may be integrated with a piston that is hydraulically reciprocated by a cylinder, so that the actuator 100 and the carrier 200 are integrally arranged.

[0035] Furthermore, although not shown, actuator 100 may be arranged to share some components with an actuator of a braking system that performs normal braking of a vehicle in which the parking brake of an embodiment of the present disclosure is installed. For example, actuator 100 may be arranged to selectively receive rotational force from an electric motor comprising an actuator of a braking system that performs normal braking of a vehicle, via a clutch or other configuration.

[0036] The carrier 200 may include a rotating shaft 210 arranged on one side and may be retracted and advanced by the actuator 100, as described above, toward the disc D, which rotates with the vehicle wheel. The rotating shaft 210 may be arranged parallel to a rotational axis of the disc D.

[0037] Meanwhile, although not shown, the carrier 200 may be installed together with the actuator 100 on a housing or base or the like to guide the reciprocating movement of the carrier 200. In this case, the carrier 200 may be installed together with the actuator 100 on the housing of the braking system that performs normal braking of the vehicle in which the parking brake of one embodiment of the present disclosure is installed.

[0038] Furthermore, the direction of movement when the carrier 200 advances and retracts toward the disk D can be from a front or rear side of the disk D to a rear or front side of the disk D, or from a lower or upper side of the disk D to an upper or lower side. Furthermore, the carrier 200 can be shaped such that the direction of movement when advancing and retracting toward the disk D corresponds to the rotation axis of the disk D.

[0039] The friction lining 300 may be coupled to the carrier 200 for rotation about the rotating shaft 210 and for applying or releasing pressure to at least a portion of an outer peripheral surface of the disc D in response to the reciprocating movement of the carrier 200. To achieve this, the friction lining 300 may include a lining plate 310 with a joint 311 rotatably connected to the rotating shaft 210.

[0040] Furthermore, the friction pad 300 may be formed of a relatively stiffer material than the friction pad of a brake system that performs normal braking of a vehicle in which the parking brake of an embodiment of the present disclosure is installed. This is because, compared to the friction pad of a brake system that performs normal braking of a vehicle, the friction pad 300 of the parking brake of an embodiment of the present disclosure may be subjected to relatively less noise and dust generated by friction between the disc and the friction pad during braking. The friction pad 300 may be made of the same metal material as the disc D, such as steel.

[0041] The parking brake according to an embodiment of the present disclosure, configured as described above, can hold the vehicle in a parked state by a braking force generated by the friction pad 300 rotatable by the carrier 200, which is advanced and retracted by the actuator 100 independently of a braking system that performs normal braking.

[0042] Accordingly, the parking brake according to an embodiment of the present disclosure can improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to frequent brake application during operation and temperature changes caused by the external environment, etc., compared with a conventional PIC type parking brake.

[0043] In particular, the parking brake of the present embodiment can further improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to wear or deformation of the friction pad as described above, since the friction pad provided with a relatively strong material presses the outer peripheral surface of the disc in the radial direction to generate a braking force.

[0044] Fig. 2 is a side view showing a released state of a parking brake according to an embodiment of the present disclosure, and Fig. 3 is a side view showing the engaged state of a parking brake according to an embodiment of the present disclosure.

[0045] With reference to the Fig. 2 and Fig. 3, a parking brake according to an embodiment of the present disclosure may further include an elastic member 400 that applies an elastic force to the friction pad 300 from the carrier 200, and an over-rotation prevention structure that limits the rotation angle of the friction pad 300 about the rotation shaft 210.

[0046] More specifically, the elastic member 400 is fixed at one end to the carrier 200, and the other end is fixed to one side of the friction pad 300 to provide an elastic force to rotate the friction pad 300 about the rotating shaft 210. Accordingly, the parking brake according to an embodiment of the present disclosure can maintain the friction pad 300 in a state where the friction pad 300 is rotated counterclockwise at a certain angle around the rotating shaft 210 by the elastic member 400 when the parking brake is in a released state, that is, when the vehicle is traveling or when the general braking system is operating, as shown in Fig. 2. Although the elastic element 400 is illustrated as a coil spring, it may, of course, comprise a variety of other elastic elements known in the art.

[0047] On the other hand, in the over-rotation prevention structure, an abutment portion 312 disposed on the friction pad 300 may be supported on the blocking member 220 disposed on the carrier 200, so that the friction pad 300 is prevented from rotating beyond a predetermined angle about the rotating shaft 210 by the elastic member 400. Of course, such an over-rotation prevention structure may be applied to various structures known in the art in addition to the above structure.

[0048] The parking brake according to an embodiment of the present disclosure is in Fig. 3, wherein the carrier 200 is moved by the actuator 100 toward the disc D to enter the engaged state of the parking brake, and the underside of the friction pad 300 contacts the outer peripheral surface of the disc D, wherein continued movement of the carrier 200 may cause the friction pad 300 to rotate about the rotating shaft 210 such that one side of the friction pad 300 contacts at least a portion of the outer peripheral surface of the disc D, thereby preventing the disc D from rotating.

[0049] At this time, in order to prevent damage to the underside of the friction pad 300 or the outer peripheral surface of the disk D due to a collision between the underside of the friction pad 300 and the outer peripheral surface of the disk D when the carrier 200 moves toward the disk D, the friction pad 300 may further have a rounded portion 313 arranged on the underside.

[0050] In addition, the elastic member 400 is maintained in a tensile state in the applied state of the parking brake compared to the released state of the parking brake, and the rotation angle of the friction pad 300 can be limited by having one side of the friction pad 300 in close contact with the outer peripheral surface of the disc D. To achieve this, the friction pad 300 can be shaped such that the curvature of the braking surface that applies or releases pressure to a part of the outer peripheral surface of the disc D corresponds to the curvature of the disc D.

[0051] Accordingly, the parking brake of one embodiment of the present disclosure can maintain a stationary state of the disc D by causing the friction pad 300 to pressurize one side of the outer peripheral surface of the disc D in a radial direction through the carrier 200. In particular, since a part of the friction pad 300 may wear due to frequent use of the friction pad 300, and since the friction pad 300 may rotate from the rotating shaft 210 and be in close contact with the outer peripheral surface of the disc D even in a state of different curvature from the outer peripheral surface of the disc D, deterioration of braking performance due to wear or deformation of the friction pad 300 can be further prevented.

[0052] Figures 4 and 5 are side views showing the disengaged and engaged states of a parking brake according to another embodiment of the present disclosure, respectively.

[0053] According to the Fig. 4 and Fig. 5, a parking brake according to another embodiment of the present disclosure may include an actuator 100, a pair of carriers 200 disposed on both sides of an outer peripheral surface of the disc D, and a friction lining 300 disposed on the carriers 200.

[0054] The actuator 100 serves as a means for advancing and retracting the carriers 200, each arranged on either side of the outer peripheral surface of the disk D, toward the disk D relative to a rotational axis of the disk D. As in the above embodiments, either an electromechanical method using an electric motor or a hydraulic method using fluid pressure may be used. The actuator 100 may include, for example, an electric motor or a hydraulic piston.

[0055] More specifically, if the actuator 100 is arranged electromechanically, the actuator 100 may further comprise an electric motor and a power transmission means, such as gears, for converting the rotary motion output by the actuator 100 into a reciprocating motion of the support 200. The power transmission may, for example, be a plurality of gears that convert the rotary motion output by the actuator 100 into a closer or wider spacing between the supports 200.

[0056] If the actuator 100 is hydraulically operated, the carrier 200 may additionally be equipped with a piston that is hydraulically reciprocated by a cylinder. For example, the carrier 200 may be integrally arranged with the pistons located on either side of the cylinder and hydraulically spaced apart or reduced by the same distance.

[0057] Although not shown, the actuator 100 may be replaced by an actuator of a braking system that performs normal braking of a vehicle in which the parking brake of an embodiment of the present invention is installed. Furthermore, the actuator 100 may be arranged to move the pair of carriers 200 independently of each other toward the outer peripheral surface of the disc D.

[0058] The supports 200 may include a single-sided rotary shaft 210 and be arranged on both sides of the outer peripheral surface of the disc D relative to a rotational axis of the disc D that rotates with the wheel of the vehicle. The supports 200 may be spaced apart from one another by the actuator 100 or may be moved back and forth independently of one another toward the outer peripheral surface of the disc D. The rotary shaft 210 arranged on each support 200 may be arranged parallel to the rotational axis of the disc D.

[0059] Although not shown, the brackets 200 may also be installed together with the actuator 100 on a housing or base or the like to guide the reciprocating movement of the brackets 200. In this case, the bracket 200 may also be installed together with the actuator 100 on the housing of the braking system that performs normal braking of the vehicle in which the parking brake of one embodiment of the present disclosure is installed.

[0060] The friction linings 300 may be coupled to each of a pair of carriers 200 for rotation about the rotating shaft 210 to apply or release pressure to at least a portion of the outer peripheral surface of the disc D in response to reciprocating movement of the carriers 200. To achieve this, the friction lining 300 may include a lining plate 310 having a hinge 311 rotatably engaged with the rotating shaft 210. Accordingly, the friction lining 300 may be pressed against both sides of the outer peripheral surface of the disc D to prevent rotation of the disc D, as shown in Fig. 5 shown.

[0061] Here, the friction pad 300 may further include an elastic member 400 that imparts elastic force to the friction pad 300 away from the carrier 200, as in the aforementioned embodiment, and an over-rotation prevention structure that limits the rotation angle of the friction pad 300 about the rotating shaft 210.

[0062] More specifically, the elastic member 400 is fixed at one end to the carrier 200, and the other end is fixed to one side of the friction pad 300 to provide an elastic force to rotate the friction pad 300 about the rotating shaft 210. Accordingly, the parking brake according to an embodiment of the present disclosure can maintain the friction pad 300 in a state where the friction pad 300 is rotated counterclockwise at a certain angle around the rotating shaft 210 by the elastic member 400 when the parking brake is in a released state, that is, when the vehicle is traveling or when the general braking system is operating, as shown in Fig. 2. Although the elastic element 400 is illustrated as a coil spring, it may, of course, also comprise various other elastic elements known in the art.

[0063] On the other hand, in the over-rotation prevention structure, an abutment portion 312 disposed on the friction pad 300 may be supported on the blocking member 220 disposed on the carrier 200, so that the friction pad 300 is prevented from rotating beyond a predetermined angle about the rotating shaft 210 by the elastic member 400. Of course, such an over-rotation prevention structure may be applied to various structures known in the art in addition to the structure described above.

[0064] Furthermore, the friction lining 300 may be provided with a relatively stiffer material than the friction lining of a brake system that performs normal vehicle braking, since the noise and dust generated by the friction between the disc and the friction lining during braking can be considered relatively lower than the friction lining of a brake system that performs normal vehicle braking. The friction lining 300 may be made of the same metal material as the disc D, such as steel.

[0065] Accordingly, the parking brake according to an embodiment of the present disclosure can improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to frequent brake application during operation and temperature changes caused by the external environment, etc., compared with a conventional PIC type parking brake.

[0066] In particular, the parking brake of the present embodiment can further improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to wear or deformation of the friction pad as described above, since the friction pad provided with a relatively strong material presses the outer peripheral surface of the disc in the radial direction to generate a braking force.

[0067] Fig. 6 and Fig. 7 are side views each showing the released and applied states of a parking brake according to another embodiment of the present disclosure.

[0068] As in the Fig. 6 and Fig. 7, a parking brake according to another embodiment of the present disclosure may include an actuator 100, a carrier 200, and friction pads 300 on both sides of the carrier 200.

[0069] The actuator 100 serves as a means for advancing and retracting the carrier 200 toward an outer peripheral surface of the disk D. As in the above embodiments, either an electromechanical method using an electric motor or a hydraulic method using fluid pressure can be used. The actuator 100 may include, for example, an electric motor or a hydraulic piston.

[0070] More specifically, if the actuator 100 is arranged electromechanically, the actuator 100 may further comprise an electric motor and a power transmission means, such as gears, for converting the rotary motion delivered by the actuator into a reciprocating motion of the carrier 200. If the actuator 100 is hydraulically operated, the carrier 200 may additionally be equipped with a piston that is hydraulically reciprocated by a cylinder. For example, the carrier 200 may branch symmetrically from the piston, which reciprocates hydraulically by the cylinder about a rotational axis of the disc D.

[0071] Furthermore, although not shown, the actuator 100 may be replaced by an actuator of a braking system that performs normal braking of a vehicle in which the parking brake of an embodiment of the present disclosure is installed.

[0072] The carrier 200 may include a rotary shaft 210 arranged symmetrically on the outer peripheral side of the disc D with respect to the rotational axis of the disc D and capable of being advanced and retracted toward the disc D by the actuator 100. The rotary shafts 210, located on both sides of the outer peripheral surface of the disc D relative to the rotational axis of the disc D, may each be arranged parallel to the rotational axis of the disc D.

[0073] On the other hand, although not shown, the carrier 200 may be installed together with the actuator 100 on a housing or base or the like to guide the reciprocating movement of the carrier 200. In this case, the carrier 200 may also be installed together with the actuator 100 on the housing of the braking system that performs normal braking of the vehicle in which the parking brake of one embodiment of the present disclosure is installed.

[0074] Friction linings 300 may be coupled to each of a pair of carriers 200 for rotation about the rotating shaft 210 to apply or release pressure to at least a portion of the outer peripheral surface of the disc D in response to reciprocating movement of the carriers 200. To achieve this, the friction lining 300 may include a lining plate 310 having a hinge 311 rotatably engaged with the rotating shaft 210. Accordingly, the friction lining 300 may be pressed against both sides of the outer peripheral surface of the disc D to prevent rotation of the disc D, as shown in Fig. 7 shown.

[0075] Here, the friction lining 300 may further include an elastic member 400 that imparts an elastic force to the friction lining 300 away from the carrier 200, as in the aforementioned embodiment, and an over-rotation prevention structure that limits the rotation angle of the friction lining 300 about the rotating shaft 210.

[0076] More specifically, the elastic member 400 is fixed at one end to the carrier 200, and the other end is fixed to one side of the friction pad 300 to generate an elastic force that allows the friction pad 300 to rotate about the rotating shaft 210. Accordingly, the parking brake according to an embodiment of the present disclosure can maintain the friction pad 300 in a state where the friction pad 300 is rotated counterclockwise at a certain angle around the rotating shaft 210 by the elastic member 400 when the parking brake is in a released state, that is, when the vehicle is traveling or when the general braking system is operating, as shown in Fig. 2. Although the elastic element 400 is illustrated as a coil spring, it may also comprise various other elastic elements known in the art.

[0077] On the other hand, in the over-rotation prevention structure, an abutment portion 312 disposed on the friction pad 300 may be supported on the blocking member 220 disposed on the carrier 200, so that the friction pad 300 is prevented from rotating beyond a predetermined angle about the rotating shaft 210 by the elastic member 400. Of course, such an over-rotation prevention structure may be applied to various structures known in the art in addition to the structure described above.

[0078] Furthermore, the friction lining 300 may be provided with a relatively stiffer material than the friction lining of a brake system that performs normal vehicle braking, since the noise and dust generated by the friction between the disc and the friction lining during braking can be considered relatively lower than the friction lining of a brake system that performs normal vehicle braking. The friction lining 300 may be made of the same metal material as the disc D, such as steel.

[0079] Accordingly, the parking brake according to an embodiment of the present disclosure can improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to frequent brake application during operation and temperature changes caused by the external environment, etc., compared with a conventional PIC type parking brake.

[0080] In particular, the parking brake of the present embodiment can further improve the operational reliability of the parking brake by minimizing the deterioration of the braking performance due to wear or deformation of the friction pad as described above, since the friction pad provided with a relatively strong material presses the outer peripheral surface of the disc in the radial direction to generate a braking force.

[0081] Meanwhile, exemplary embodiments of the parking brake of the present invention have been described herein, but the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various changes may be made to the above-described exemplary embodiments of the present invention without departing from the spirit or scope of the invention.

[0082] Therefore, the scope of the invention should not be limited to the described embodiments, but should be defined by the scope of the appended claims and their equivalents.

[0083] In other words, the foregoing embodiments are to be considered as exemplary and not restrictive in all respects, and the scope of the invention is to be indicated by the claims of the patent application to be described below rather than by the detailed description thereof, and the meaning and scope of the claims of the patent application as well as all changes or modifications derived from the concept of equivalents are to be interpreted as being included within the scope of the invention.

Claims

[1] Parking brake, comprising: a disc (D) adapted to rotate with a wheel of a vehicle; a carrier (200) having a rotary shaft (210) formed on one side thereof, which is adapted to be moved back and forth by an actuator (100) toward an outer peripheral surface of the disc (D); and a friction lining (300) coupled to the carrier (200) to rotate the rotary shaft (210) and configured to pressurize or depressurize at least a portion of the outer peripheral surface of the disc (D) in response to the reciprocating movement of the carrier (200). [2] Parking brake according to claim 1, wherein the friction lining (300) comprises: a lining plate (310) having a joint (311) rotatably engaged with the rotary shaft; and a friction surface arranged between the lining plate (310) and the outer peripheral surface of the disc (D). [3] Parking brake according to claim 2, wherein the friction surface is arranged in an arc shape and has a curvature corresponding to the curvature of the disc (D). [4] Parking brake according to one of claims 1 to 3, wherein the rotary shaft (210) is arranged parallel to a rotation axis of the disc (D). [5] A parking brake according to any one of claims 1 to 4, further comprising an elastic member (400) between the carrier (200) and the friction lining (300) adapted to provide an elastic force to allow the friction lining (300) to be rotated about the rotary shaft (210). [6] A parking brake according to claim 5, wherein the elastic member (400) is connected at one end to the carrier (200) and at the other end to the friction pad (300) to rotate the friction pad (300) at a predetermined angle about the rotary shaft (210) when the carrier (200) is spaced from the disc (D). [7] Parking brake according to claim 6, wherein the angle of rotation of the friction lining (300) rotating about the rotary shaft (210) by the elastic element (400) is limited by a blocking element (220) arranged on the carrier (200) and a contact part (312) arranged on the friction lining (300). [8] A parking brake according to any one of claims 1 to 7, wherein the friction pad (300) further comprises a rounded portion (313) disposed at an end at which the carrier (200) is moved toward the outer peripheral surface of the disc (D) and makes a first contact with the outer peripheral surface of the disc (D). [9] Parking brake, comprising: a disc (D) adapted to rotate with a wheel of a vehicle; a pair of supports (200), each having a rotary shaft (210) arranged on one side and on both sides of an outer peripheral surface of the disc (D) relative to a rotation axis of the disc (D), and adapted to be advanced and retracted toward the outer peripheral surface of the disc (D) by an actuator (100); and a pair of friction pads (300) each coupled to the carrier (200) to rotate the rotary shaft (210) and configured to apply or release pressure to at least a portion of the outer peripheral surface of the disc (D) in response to the reciprocating movement of the carrier (200). [10] Parking brake according to claim 9, wherein the friction lining (300) comprises: a covering plate (310) having a joint (311) rotatably engaged with the rotary shaft (210); and a friction surface arranged between the lining plate (310) and the outer peripheral surface of the disc (D). [11] Parking brake according to claim 10, wherein the friction surface is arranged in an arc shape and has a curvature corresponding to the curvature of the disc (D). [12] Parking brake according to one of claims 9 to 11, wherein the rotary shaft (210) is arranged parallel to a rotation axis of the disc (D). [13] Parking brake according to one of claims 9 to 12, wherein the supports (200) are arranged such that they are spaced apart from one another by the actuator (100) relative to an axis of rotation of the disc (D). [14] Parking brake according to one of claims 9 to 13, wherein the supports (200) are arranged to be retracted and advanced independently of one another by the actuator (100) in the direction of the outer peripheral surface of the disc (D). [15] Parking brake, comprising: a disc (D) adapted to rotate with a wheel of a vehicle; a carrier (200) having a rotary shaft (210) arranged on each side of the carrier (200) and adapted to be moved back and forth by an actuator (100) toward an outer peripheral surface of the disc (D); and a pair of friction pads (300) each coupled to both sides of the carrier (200) to rotate each rotary shaft (210) and configured to apply or release pressure to at least a portion of the outer peripheral surface of the disc (D) in response to the reciprocating movement of the carrier (200). [16] A parking brake according to claim 15, wherein a center between the rotary shafts (210) is arranged on a straight line which is equal to a center of a rotation axis of the disc (D). [17] Parking brake according to one of claims 15 or 16, wherein the friction lining (300) comprises: a covering plate (310) having a joint (311) rotatably engaged with the rotary shaft (210); and a friction surface arranged between the lining plate (310) and the outer peripheral surface of the disc (D). [18] Parking brake according to claim 17, wherein the friction surface is arranged in an arcuate manner and has a curvature corresponding to the curvature of the disc (D). [19] Parking brake according to one of claims 15 to 18, wherein the rotary shaft (15) is arranged parallel to a rotation axis of the disc (D). [20] A parking brake according to any one of claims 15 to 19, wherein the friction lining (300) further comprises a rounded portion (313) disposed at an end at which the carrier (200) is moved toward the outer peripheral surface of the disc (D) and makes a first contact with the outer peripheral surface of the disc (D).

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